Throttle valve defective
The throttle valve controls engine power.
Costs
Every car issue can be caused by different things. Here are the most common ones
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Most Expensive
Moderate costs
Moderate costs
Moderate costs
Cheapest case
Discussions
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Details
Probability
Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made
HIGH
Typical consequences
If this defect is detected, it may lead to the following problems:
- Engine damage
- Failure of the exhaust emission test (Failure to pass the exhaust emission test)
Function of throttle valve
The throttle valve regulates the air-fuel mixture in the engine. In gasoline engines, it influences engine speed and power. In modern diesel engines, it enables precise exhaust gas recirculation and prevents engine chatter when the engine is switched off.
In modern vehicles, there is no direct connection to the throttle valve. A sensor on the accelerator pedal sends signals to the engine control unit, which in turn controls the throttle position. This position is constantly compared with other engine data to calculate the optimum position. A throttle potentiometer determines how wide open the throttle is and sends this info to the ECU.